Best movies like Ultimatum

In World War I France, a pilot falls in love with the wife of his friend and superior officer.

In early 1950s Vietnam, a young American becomes entangled in a dangerous love triangle when he falls for the beautiful mistress of a British journalist. As war is waged around them, the trio sinks deeper into a world of drugs, passion, and betrayal where nothing is as it seems.

An American military officer and his wife move to a cottage in what they think is the peaceful English countryside, only to discover the area is a hotbed of spies and secret agents.

An American ballistics expert in Turkey finds himself targeted by Nazi agents. Safe passage home by ship is arranged for him, but he soon discovers that his pursuers are also on board.

During World War I, Army Private Arthur James Hamp is accused of desertion during battle. The officer assigned to defend him at his court-martial, Captain Hargreaves, finds out there is more to the case than meets the eye.

When an unauthorized letter is sent to Moscow alleging the U.S. government's willingness to help Russia attack China, former naval officer Charles Rone and his team are sent to retrieve it. They go undercover, successfully reaching out to Erika Kosnov, the wife of a former agent, now married to the head of Russia's secret police. Their plans are interrupted, however, when their Moscow hideout is raided by a cunning politician.

Just prior to World War I, the Kaiser sends Baron von Zeller to inform Emperor Franz Josef of Austria that he is ready to declare war on France. Sensing the impending crisis, the French War Office dispatches secret agent René de Bornay to investigate the situation, and upon his arrival, he cultivates the friendship of Franz Josef's mistress, the Countess Griselda von Arenburg.

In 1908 London, a women's rights campaigner discovers the Assassination Bureau Limited, an organization that kills for justice. When its motives are called into question, she commissions the assassination of its chairman. Knowing that his colleagues have recently become more motivated by greed than morality, he turns the situation into a challenge for his board members: kill him or be killed.

The film focuses on the naval warfare around the Battle of Coronel and Battle of the Falkland Islands during the First World War. It was the last in a successful series of documentary reconstructions of First World War battles by British Instructional Films made between 1921 and 1927.

A true-life drama in the 1920s, centering on British explorer Col. Percy Fawcett, who discovered evidence of a previously unknown, advanced civilization in the Amazon and disappeared whilst searching for it.

As a collection of history's worst tyrants and criminal masterminds gather to plot a war to wipe out millions, one man must race against time to stop them.

Set in the fields of Devon and the WW1 battlefields of Flanders, two brothers fall for the same girl while contending with the pressures of their feudal family life, the war, and the price of courage and cowardice.

When World War I breaks out, brothers Roy and Monte Rutledge, each attending Oxford university, enlist with the Royal Flying Corps.

An Austrian prince's doomed love affair with a Czech countess sparks turmoil across Europe.

100 years ago Mata Hari faced the firing squad as a convicted Dutch spy. It was at this moment that the legend of Mata Hari, the seductive spy, was born. Newly-discovered documents cast doubt on her guilt and reveal startling truths about her life. Mata Hari was a self-made woman whose boldness and sexuality threatened the male establishment. Most of what we've known about her until now has largely been myth. Mata Hari's challenges as an abused wife, single mother and a creative independent woman are familiar to women around the world. At the turn of the century, her struggles to attain sexual freedom, artistic expression, and liberation from the constraints of conventional society are the same ones women face today. She graced the cover of Vogue, performed all over Europe and left a coterie of smitten admirers in her wake.

During WWI pretty German master spy Helene von Lorbeer is sent undercover to London to live with the family of a high-placed British official where she is to rendezvous with the butler Valdar, also a spy, and help him transmit secret war plans back to Germany.

A newlywed suspects her husband of being a Communist spy.

It is 1915 in Vienna and the Great War has caused many casualties. Elsa, a beautiful prostitute, wants to help the war effort, but is rejected as a nurse, but a government official thinks that she will make an excellent spy.

During WW2, in a Nazi-occupied country, a local partisan blows-up a German military train, prompting the Germans to take civilian hostages to be shot if the culprit doesn't surrender before a deadline.

An amnesiac World War I vet falls in love with a music hall star, only to suffer an accident which restores his original memories but erases his post-War life.

A low-ranking Secret Service agent is conned into supplying information to Eastern Bloc countries. Although he is not a suspect due to his unimportant position, when his office partner is hauled in as a suspect he realises he has got himself into very deep water.

Madeline Goddard, is a British double agent who meets and falls in love with a German spy Baron Karl Von Marwitz during World War I. This tale of espionage blends high adventure and romance making perfect order from wartime chaos and growing in faith from despair.

Wartime secret agents are on a mission to destroy a deadly new type of torpedo, hidden in a Nazi stronghold in France.

The horrors of World War I have robbed returning veteran Chris Baldry of his memory. The traumatized soldier doesn't even recognize his own wife, Kitty, or remember their years together. While Baldry attempts to cope with the unfamiliar surroundings of his own home, he seeks out the company of an old flame from his childhood, Margaret Grey. His amnesia also makes him a ready target for the affections of his older cousin, Jenny.

A semi-autobiographical coming-of-age story set in the Cotswolds during and immediately after the First World War.

A family saga in which three of a Bavarian widow's sons go to war for Germany and the fourth goes to America, Germany's eventual opponent.

In England, two young friends, confronted with the outbreak of World War I, enlist together to serve in the same company on the battle-field.

Sarajevo June 28, 1914. Dushan, the Serbian mayor of a Hungarian town, has come to see the parade of Archduke Ferdinand. While there he runs into Geza, an old friend in the Hungarian Army and invites him to come to his house and visit him and his new wife.

Forever England gives John Mills his first leading role as Brown. Born after a brief affair between his mother and a naval officer, he joins the Royal Navy during the First World War. There his bravery and marksmanship keeps a German ship in port so a British ship can sink it. He becomes a hero, but at what cost?

In the third film in the series, in 1908, Henry Jones Sr. takes his wife, son and the boy's tutor to the world's first psycho-analytical conference in Viena, Austria. Young Indy meets Princess Sophie of Austia, daughter of Archduke Franz Ferdinand and develops deep feelings for her. He even asks Sigmund Freud, Carl Jung and Alfred Adler for love advice. On their next stop in Florence, Anna Jones becomes the object of affection for the persuasive opera composer Giacomo Puccini. With her husband away in Rome, Anna is torn between her feelings for her husband and the impulsive Italian.

The outbreak of World War I places Scots officer Geoffrey Richter-Douglas in an uncomfortable position. Although his allegiance is to Britain, his mother was from an aristocratic Bavarian family, and he spent his summers in Germany as a child. When Geoffrey is approached by a German spy who offers him a chance to defect, he reports the incident to his superiors, but instead of arresting the spy they suggest that he accept her offer--and become an Allied agent. In Germany, among old friends, Geoffrey discovers that loyalty is more complicated than he expected, especially when he finds himself aboard the maiden voyage of a powerful new prototype Zeppelin, headed for Scotland on a secret mission that could decide the outcome of the war.

Lucien is a young soldier in the French army during the First World War. Recently married and with a young daughter, his only aim is to get through the war unscathed and get back to his wife and daughter. But this world is turned upside down by a pair of trousers.

During World War I, an Austrian officer is trapped behind the Russian lines. He tries to sneak through to his own lines, but is forced to take refuge in a small hotel, where he is hidden by the establishment's chambermaid. The two fall in love, but a Russian general makes the hotel his headquarters and sets his sights on the maid. In addition, the Austrian must find out the identity of a spy who is feeding the Russians military information that could lead to the destruction of the Austrian army.

French-language remake of Port Arthur (1936): espionage, action and romance in the Russo-Japanese War, as the conflict threatens Russian naval officer Boris Ranewsky and his Japanese wife Youki.

On trial for the murder of Carl Hummel, Eddie Williams tells his story, which begins just before the World War